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Finding the Fourth Proportional to 1,017.87, 1,527.38 and 628.82

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Solution

The fourth proportional to 1,017.87, 1,527.38 and 628.82 is: 943.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017.87 : 1,527.38 = 628.82 : x
  2. Step 2: Convert to fraction form
    1,017.87/1,527.38 = 628.82/x
  3. Step 3: Cross multiply
    1,017.87x = 1,527.38 × 628.82
  4. Step 4: Simplify right side
    1,017.87x = 960,444.40
  5. Step 5: Solve for x
    x = 960,444.40/1,017.87
  6. Step 6: Final answer
    x = 943.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.